Equivalence

Focal length & format equivalence

Convert a lens between formats: enter a format and focal length to get the 35mm-equivalent focal length, crop factor and field of view.

35mm-equivalent—

Crop factor (vs 35mm)—

Horizontal FOV—

Vertical FOV—

Diagonal FOV—

Based on the format diagonal. Equivalent focal length compares field of view only — it does not change depth of field or perspective.